Linux 6.6 · Version Status
Linux 6.6 End of Life Date
Linux 6.6 end-of-life date, support status, and CVE risk. Data reconciled from official vendor documentation and endoflife.date at every build; the source of each date is on the product page.
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Linux 6.6 is actively supported. EOL date: December 31, 2027.
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EOL Date
Dec 31, 2027
475 days remaining
Latest Release
6.6.156
LTS release
Release Date
Oct 30, 2023
Linux 6.6 series
Lifecycle detail
Linux 6.6 was released on October 30, 2023 and support is scheduled to end on December 31, 2027 — a planned supported lifespan of 4 years and 2 months, shorter than the 6 years median for Linux LTS releases. It is a long-term support (LTS) release, so it carries a longer patch window than the interim releases around it. Its most recent patch is 6.6.156, published September 2, 2026.
Attack Surface
30/30 Critical tier
CISA KEV Exposure
20/20 Named in CISA KEV
Extended Support
0/10 Available
EOL Risk Score™ — proprietary methodology by endoflife.ai. Factors: EOL recency, attack surface breadth, CISA KEV catalog presence, extended support availability. Updated at every build.
Methodology → ·
View score card →
| Version | Latest | EOL Date | Status |
|---|
| 4.9 LTS |
4.9.337 |
Jan 7, 2023 |
EOL |
| 4.14 LTS |
4.14.336 |
Jan 10, 2024 |
EOL |
| 4.19 LTS |
4.19.325 |
Dec 5, 2024 |
EOL |
| 5.4 LTS |
5.4.302 |
Dec 3, 2025 |
EOL |
| 5.10 LTS |
5.10.269 |
Dec 31, 2026 |
Warning |
| 5.11 |
5.11.22 |
May 19, 2021 |
EOL |
| 5.12 |
5.12.19 |
Jul 20, 2021 |
EOL |
| 5.13 |
5.13.19 |
Sep 18, 2021 |
EOL |
What does Linux 6.6 end of life mean?
When Linux 6.6 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Linux 6.6 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Linux 7.2 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Linux 6.6 reach end of life?
Linux 6.6 reached end of life on December 31, 2027. That is 475 days remaining.
Is Linux 6.6 still supported?
Yes, Linux 6.6 is currently supported. The EOL date is December 31, 2027.
What should I upgrade to from Linux 6.6?
The recommended upgrade from Linux 6.6 is
Linux 7.2 — the latest actively supported version. Check the
Linux full timeline for all supported versions.
What are the security risks of running Linux 6.6 past EOL?
When Linux 6.6 reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no remediation path. Most vulnerability scanners do not flag this — it is the CVE blind spot. Organizations running EOL Linux should migrate immediately or implement compensating controls.